Classification of Hazardous (Classified) Locations: Who deterrnines this classification?.

The article discusses whose responsibility it is to determine whether or not an area for electrical installations is going to be considered a hazardous (classified) location. Topics covered include a design team that is responsible for the area classification part of the design, how the degree of hazard is usually determined and how to determine the likelihood that an ignitable concentration exists, and the role of authority having jurisdiction (AHJ) in area classifications.